21949614 has 24 divisors (see below), whose sum is σ = 47645832. Its totient is φ = 7302960.

The previous prime is 21949559. The next prime is 21949633. The reversal of 21949614 is 41694912.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15204 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (1985243).

Almost surely, 2^21949614 is an apocalyptic number.

21949614 is an abundant number, since it is smaller than the sum of its proper divisors (25696218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21949614 is a wasteful number, since it uses less digits than its factorization.

21949614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2269 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 21949614 is about 4685.0415152910. The cubic root of 21949614 is about 279.9898550746.

The spelling of 21949614 in words is "twenty-one million, nine hundred forty-nine thousand, six hundred fourteen".